Hi guys ,I need help to find the radius of curvature for this exercice:(adsbygoogle = window.adsbygoogle || []).push({});

A metal bar is 1.75m long with a coefficient of thermal expansion of 1.34*10^{-5}K^{-1}. It is rigidly held between two fixed beams. When the temperature rises, the metal bar takes on the shape of the arc of a circle.

What is the radius of curvature of the circle when the temperature rises by 40 degrees celcius?

hint:for small angle: sin(x)=x-x^{3}/6.

thankx for your help!

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# Radius of curvature

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